Earlsfield SW18
Loft & Extension Specialists in Earlsfield
Specialist loft conversion and extension builders. FMB members.
07564 041115Our Services in Earlsfield
Loft Conversions
Dormer, mansard, hip-to-gable, and L-shaped conversions for Earlsfield's period properties.
- 8–12 week build
- From £75,000
- Planning handled
Extensions
Rear, side return, and wraparound extensions. Open-plan living designed for Earlsfield homes.
- 8–14 week build
- From £60,000
- Party wall managed
Earlsfield Cost Guide
| Type | Typical Cost | Planning? |
|---|---|---|
| Velux / Rooflight | £55,000 – £75,000 | Usually no |
| Rear Dormer | £75,000 – £110,000 | Often no |
| L-Shaped Dormer | £90,000 – £140,000 | Check with us |
| Mansard | £100,000 – £160,000+ | Yes |
| Rear Extension | £60,000 – £90,000 | Often no |
| Side Return | £40,000 – £60,000 | Often no |
All costs exclude VAT. Detailed quote provided before work begins.
Common Questions
Many extensions and loft conversions in Earlsfield fall under permitted development. Properties near Magdalen Road or within the Wandsworth Common conservation area may need planning permission from Wandsworth Council. We assess your planning position first and handle the full application if required.
Dormer conversions from £75,000, L-shaped dormers from £90,000, mansard from £100,000. Rear extensions from £60,000, side returns from £45,000. All fixed-price quotes with no hidden extras.
Loft conversions: 8–12 weeks. Extensions: 8–14 weeks. We provide a detailed programme before work begins and one project manager stays on your build from start to finish.
Yes. Earlsfield's Victorian and Edwardian terraces almost always need party wall agreements. We manage the full process — surveyor appointments, serving notices, and neighbour liaison — from start to finish.
A well-executed loft conversion or extension in Earlsfield typically adds 15–25% to the property value — considerably more than the cost of the build. Family homes near the good local schools tend to see the strongest uplift.
Nearby areas we cover
Ready to talk about your project?
Free consultation. Transparent, fixed-price quote within 48 hours.